As mentioned, Riot Fest Chicago 2012 goes down from September 14-16 in Humboldt Park, and now also at Congress Theater, who will host the opening night. Joining the initial lineup of Iggy & the Stooges, Elvis Costello, Descendents, Gogol Bordello, The Jesus and Mary Chain, The Gaslight Anthem, The Promise Ring, Screaming Females, Built to Spill, and more is a second wave of artists including Andrew W.K. (full band), Hot Water Music, Minus the Bear, The Adicts, Henry Clay People, The Adicts, Pegboy, Imagine Dragons, Dead Sara, Fireworks, The Infected, Neon Trees, and still more to come.

Day-by-day lineups have now also been revealed which you can check out below. Multi-day passes are almost all sold out, but a few options are still available, and single day tickets go on sale today at 10 AM.

SATURDAY, SEPTEMBER 15 in Humboldt Park: Rise Against, Descendents, Coheed and Cambria, Dropkick Murphys, The Gaslight Anthem, Slapstick, Hot Water Music, Andrew W.K., Minus The Bear, Less Than Jake, GWAR, August Burns Red, Frank Turner, The Adicts, Nobunny, A Whilhelm Scream, Teenage Bottlerocket, Screaming Females, Off With Their Heads, Deals Gone Bad, Larry and His Flask, The Story So Far, Environmental Encroachment, Fireworks and more to be announced.

SUNDAY, SEPTEMBER 16 in Humboldt Park: Iggy and the Stooges, Elvis Costello, A Day To Remember, Gogol Bordello, NOFX, Alkaline Trio, The Jesus and Mary Chain, AWOLNATION, The Promise Ring, Chiodos, Built To Spill, Imagine Dragons, Reverend Horton Heat, Fishbone, Screaming Females, White Mystery, The Henry Clay People, Sister Crayon, Japanther, The Infected, Environmental Encroachment and more to be announced.